Elevator-governor



(No Model.

E. W. ERIGKSON.

ELEVATOR GOVERNOR No. 561,505. Patented June 2, 1896.

v INVENTOR. uc/f u'esm ATTORNEY.

B GRAHAM PHOTOLTTHQWASHINGTOM D C NITED STATES PATENT OFFICE.

ERICK YVILHELM ERIOKSON, OF BROOKLYN, NEWV YORK.

ELEVATOR-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 561,505, dated June 2,1896. Application filed September 21,1895. $erial No. 563,207. (Nomodel.)

To aZZ whom it may concern:

Be it known that I, ERICK WILHELM ERICK- SON, a citizen of the UnitedStates of America, and a resident of the city of Brooklyn, State of NewYork, have invented a new and useful Improvement in Elevator-Governors,of which the following is a specification, reference being had to theannexed drawings, forming a part thereof.

Figure 1 shows a central sectional elevation of the governor. Fig. 2 isa View of an elevator, showing the connection between such elevator andthe wheel on the shaft of the governor shown in Fig. 1. Fig. 2 is abottom plan view of the elevator-car. Fig. 3 is a plan view of thecylinder A.

A is a movable cylinder passing through the supporting-ring B, (which inturn is held in place by supports 0 and D,) and rests on top of thesupport E, but is separated from said support E by ends of supports 0and D. The bottom of cylinder A and the top of cylinder E are open.

F F is a piston and rod connected with crank-shaft G, which passesthrough cylinder E, and H is a wheel attached thereto.

I is an endless cable passing over wheels II and L, situated,respectively, at the top and bottom of the elevator-shaft and connectedwith the safety-clutches N beneath the ele-' When the governor isconnected to an elevator by rope .I, as described, the lifting orfalling of the elevator will draw the said rope back and forth overwheel H, thus driving the piston in cylinder A by the revolution ofcrank-shaft G.

By. adjusting the diameter of the opening M to suit the required speedof the elevator the piston will move up and down in cylinder A withlittle resistance, and the weight of the cylinder will suffice to holditself stationary; but by a too great speed in the rise or fall of theelevator, by accident or otherwise, the accelerated speed of the pistonwill force the air in the top of cylinder A faster than it can escapethrough the opening M and the Whole cylinder A will be raised and thechain J, drawn taut,will close clutches K K on rope I, which in turnwill immediately release the safety-clutches of the elevator and stopit.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

The combination in elevator-governors of the movable cylinder A havingan adjustable opening M the supports B, O, D, and E, the piston and rodF, F, reciprocable in said cylinder, the crank-shaft G, the wheel Hthereon, the cable I passing round said wheel H, the cable-clutches K Kand chain J, connecting said cable-clutches to the cylinder A, substantially as described.

In testimony that I claim the foregoing as my invention 1 have signed myname, in presence of two witnesses, this 20th day of September, 1895.

ERICK WILHELM ERICKSON. [L. s]

Witnesses:

A. E. BRUSHABER, WM. H. Peron.

